Alcatel Canada 24T07A01D22D 7390 24 GHz Co-Pol RT User Manual NT Manual pages 36 to 50

Alcatel Canada Inc 7390 24 GHz Co-Pol RT NT Manual pages 36 to 50

NT Manual pages 36 to 50

36/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.4.3.1 Installing the RT unit on an existing tube, 76 mm in diameterFigure 17 – Installing the RT unit on an existing tube, 76 mm in diameter3.4.3.2 Installing the RT unit on an existing tube, 76 to 114 mm in diameterUse the 3CC10802 Axxx kit.Figure 18 – Installing the RT on a tube, 76 to 114 mm in diameterKit 3CC10802Axxx
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 37/ 114523.4.3.3 Front installation of the RT unitUse a support in accordance with our 3CC11132Axxx model.Figure 19 – Topview of RT front installationFigure 20 – Quotation of the RT in frontage150110201501102012 45 x 10250250SPIT M8
38/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.4.3.4 Rooftop mounting of the RT unit (raised), 1 meter mastUse a support in accordance with our 3CC11133Axxx model.Figure 21 – Rooftop mounting of the RT unit (raised), 1 meter mastFigure 22 – Quotation of the rooftop mounting of the RT unit, 1 meter mastFixation detail1000SPIT M12250300252502530016
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 39/ 114523.4.3.5 Rooftop mounting of the RT unit (raised), 1.5 meter mastUse a support in accordance with our 3CC11134Axxx model.Figure 23 – Rooftop mounting of the RT unit (raised), 1.5 meter mast
40/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 0152Figure 24 – Quotation of the rooftop mounting of the RT unit, 1.5 meter mast1500SPIT M125030025030016260450
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 41/ 114523.4.4 Grounding the RT unitConsiderations–It is not necessary to establish special grounding connection for the RT casing. However the RTunit can be grounded.–On the RT unit, the ground terminal is in the form of a tapped hole (see Figure 25 – Grounding theRT unit) on the attachment axis of the pole mounting.–The RT unit can be grounded using the grounding lug and screw hardware supplied with the equi-pment.Steps1. Crimp a lug (ref.: 16-6 CT) on to the grounding cable (16 mm 2 minimum cross-section).2. Screw the cable lug into the tapped hole. Use an M6 screw and onduflex washers.Figure 25 – Grounding the RT unitNote: Position of the grounding screw may differ according to mechanical variants beeing either closeto the 75 ohm connector or on the side as shown here.grounding screw
42/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.5 Installation of the Terminal Station RT unit with a non integrated antennaSee Appendix 6 – Installation of the Terminal Station RT unit with a non integrated antenna.3.6 Installation of the RT/NT linkConsiderations–The electrical connection between the RT unit and the NT unit of the Terminal Station is madeusing a type ET 2PA 981 75 ohm coaxial cable equipped with "F" connectors (at the NT side end)and "N" connectors (at the RT side end).–If a single cable (70 meters without connectors) does not cover the distance between the RT unitand the NT unit, up to two repeaters must be used. For the possible configurations and installationof a repeater, see § 3.8 .–If the RT unit is connected to several NTs of the Terminal Station, use several splitters. For thepossible configurations, and installation of a splitter, see § 3.9 Installation of one or several repea-ters with splitter(s).–The length of the cable used must be noted. In order to facilitate this measurement, refer to themarkings printed every meter, on the outer sheath of the cables. To know the length of cable ins-talled, subtract the number at one end from the number at the other end of the cable used. Notethe result at the NT side end.–You are recommended to secure the coaxial cable every meter with a cable tie. Use collars fittedto the support used for the path.Figure 26 – Coaxial cable–Physical cable characteristics are:•diameter = 7.5 mm,•maximum installed cable length = 210 meters,•minimal bend radius = 40 mm or 100 mm for a "drip of water".Steps1. Carry out the 75 ohm connector between the RT unit and the NT unit.Note: In the event of the use of repeaters and/or splitters, use the number of cables required by theconfiguration. Refer to § and § 3.9 Installation of one or several repeaters with splitter(s).Note: Make a drip groove where the cable enters the building, respecting the cable's bending radius(100 mm minimum), in order to prevent water infiltration.AVOID A TOO LONG PARALLEL WALK BETWEEN THE RT/NT COAXIAL LINKAND ELEC-TRICAL CABLES, OR GSM/DCS BASE STATION CABLES"F" connector 75 Ω " N" connectorTo NT unitTo RT unitTo RT unit"F" connector
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 43/ 114522. Note the length of the cable installed in the 7390 RT/NT cabling sheet (Appendix 1 – 7390 TSinstallation sheet). This information will be entered into the database when the equipment iscommissioned using the configuration software.Note: The accuracy required by the configuration software is ± 1.5 m.3. At the RT unit side end, equip the cable with a type "N" 75 ohm coaxial connector if RT «N» and «F»with RT «F», supplied with the equipment. For attaching the coaxial terminals, refer to themanufacturer's Assembly manual and use the specific tools as recommended. One of the maincauses of installation problems is the faulty mounting of connectors.Figure 27 – Connecting the "N" connector with the thermoshrinkable sleeve4. Attach the cable to the RT unit using a cable tie.Note: No overtighten the cable tie on the cable; this could cause deformation of the dielectric and sub-sequent loss of performance.5. Run the cable to the NT unit and equip it with a type "F" 75 ohm coaxial connector, supplied with theequipment.NEVER USE 50 OHM CONNECTORS, AT THE RISK OF DESTROYING THE RADIO UNIT, USE ONLY THE N 75 CONNECTOR SUPPLIED IN THE RT BOX (FOR RT «N»)IMPORTANT NOTE: NEVER HANDLE THE RT UNIT BY ITS ANTENNABUT BY THE BODY OF THE RADIO OR THE SUPPORT ARMIMPERATIVE : PROTECT THE "N" CONNECTOR OR «F» CONNECTOR CONNECTION WITH A PRE-PASTED THERMOSHRINKABLE SLEEVETHE COAXIAL CABLE SHOULD NEVER BE TOO TIGHT BETWEEN THE RT ANDITS MOUNTING. ADJUST THE POSITION OF THE MOUNTING AND THE LENGHTOF THE CABLE TO SUIT, OTHERWISE THERE IS A MAJOR RISK OF ANTENNAMISALIGMENT OR CABLE DAMAGE AT THE CONNECTOR. ON THE OTHERHAND, TOO SLACK A CONNECTION CAN HAVE THE SAME CONSEQUENCESUNDER THE EFFECT TO THE WIND70Thermoshrink a pre-pasted sleeve on theconnector/terminal/cable assembly 70 mmalong. (80 mm minimum long before thermoshrink).The sleeve end should stop at the terminal base.
44/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.7 Installation of the Terminal Station 7390 NT (Indoor Unit)Considerations–The NT units are intended for indoor installation only.–The NT should be positioned in accordance with the needs of the user and the technical cons-traints (e.g., minimum distances to be respected, topology of the connections, accessibility of theRT/NT link, power supply).–Always place the NT nit in a dry, dust-free environment, away from any major source of heat(-5°C<T<+55°C).–Always place the NCAxxx NT unit near a rated power source: 85-264 VAC , 47-63 Hz with groundconnection.Note: Use grounded power connections only. Avoid the use of extension cables.–The NT to sector connection must be done last, during commissioning (see Chapter 4 Commis-sioning the 7390 TS Terminal Station), TS installation, included all other connections, being com-pleted.–Do not install the NT too close to the ground (keep at a distance from dust and floor cleaning pro-ducts).–Do not install on premises containing corrosive materials.3.7.1 Installation of the 7390NT unit on a desktopSteps1. After unpacking the unit, fit it with its four feet, clipping them on to the bottom of the unit.2. Connect the NT unit to the Terminal Station RT ("F" connector).Figure 28 – Mounting the feetA SPACE OF 1U (in the event of rack mounting) OR APPROXIMATELY 50 mmMUST BE LEFT FREE ABOVE THE TERMINAL STATION IDUNEVER STORE DOCUMENTATION OR ANY OTHER OBJECTS ABOVE THE NTUNIT ON THE VENTILATION HOLES. THIS MAY CAUSE IT TO BE DAMAGED
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 45/ 114523.7.2 Installation of the NT unit on a 19" rackSteps1. Fit the rack adaptators on the NT unit (see Figure 29 – Fitting the NT unit rack adaptators).2. Install the unit in the 19" (or other type) rack (screw fittings not included, depending on themanufacturer).3. Connect the NT to the RT ("F" connector).Figure 29 – Fitting the NT unit rack adaptators3.7.3 Earthing the NT unitsConsiderations–NT casing must imperatively be connected to the main earth with a cable 16 mm2 minimal cross-section whose length must not exceed 2.40 m. The grounding terminal is on the right of the NTunit (connections side) and is in the form of a tapped hole (see Figure 30 – Earthing the (NCAxxx)NT unit).–The earth connection should be made as directly as possible between the unit and the generalearthing system of the side (bar, rod, plate, etc.).–The grounding of the NCAxxx NT units is through the 220V main connector; for the NGAxxx units,only one earthing point is necessary, after the earthing of all the NT units.Steps1. Crimp a lug (ref.: 16-6 CT) on to the earthing cable (16 mm2 cross-section).2. Screw the cable lug into the terminal designed for this purpose. Use an M6 screw.Figure 30 – Earthing the (NCAxxx) NT unitA SPACE OF AT LEAST 1U MUST BE LEFT FREE ABOVE THE ASSEMBLYM3x6 countersunkfixing screws Rack adaptatorGeneral earthing lug
46/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 0152Figure 31 – Earthing the (NCAxxx) NT Lite unit3.8 Installation of one or more repeater modulesConsiderations–In the case of a coaxial cable to cover a distance greater than 70 meters between the 7390 RTand the 7390 NT, a repeater module is required to compensate losses.–Repeaters are installed indoors only, sheltered from dust and heat.–The repeater must be installed in series on the RT/NT connection (coaxial cable).–Respect the installation orientation of the repeaters, paying attention to the reference marks onthe casing.–The repeater needs no setting. It has no individual power supply: the repeater automatically takesits power from the supply passing through the RT/NT connection.–The repeater is a fixed gain bi-directional amplifier. This means that the installation instructionsand methodology described below MUST be respected.Repeater installation instructions–Between repeater and RT unit, the length of the connection (coaxial cable) is variable: from 0 to70 meters.–Between repeater and NT unit, the length of the connection (coaxial cable) is always fixed: 70 me-ters.–Between two repeaters, the length of the connection (coaxial cable) is always fixed: 70 meters.–The system supports a maximum of 2 repeaters per route. Route means the path between anNT unit and the RT unit.First example: length of coaxial cable less than 140 m (here, 110 m).A single repeater is used.Figure 32 – Installation with one repeaterRTNTExample: 40 meters Fixed: 70 metersRepeater
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 47/ 11452The variable length (≤ 70 m), is always situated between repeater and RT unit.The fixed length, 70 m, is always situated between repeater and NT unit.Second example: length of coaxial cable less than 210 m but greater than 140 m (here, 200 m).Two repeaters are used.Figure 33 – Installation with two repeatersMethodology1. Select the installation location with respect to the location of the NT unit.2. Install and secure the repeater.3. Wire the repeater to the NT unit and to the RT unit, respecting the instructions contained in theinstallation principles above.4. Note the real length of the cables installed. The length of each should be ≤ 70 m. This informationwill be entered in the database when the equipment is commissioned, using the configurationsoftware.Note: The accuracy required by the configuration software is ± 1.5 m.5. If the last 70 meter section must be coiled, respect a minimum bending radius of 200 mm.IN ALL CASES, CUMULATED CABLE LENGTH MUST NOT EXCEED 210 METERSRemind: TWO REPEATERS MAXIMUM PER ROUTE CAN BE SUPPORTEDRTNTExample: Fixed:repeaterFixed:repeater60 meters 70 meters 70 meters
48/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.9 Installation of one or several repeaters with splitter(s)Considerations–Where there are several NT units for a single RT unit, one or several splitter(s) need(s) to be used.–For a single RT unit it is possible to mount up to 8 NT units.–The splitter is installed in series on the RT/NT connection (coaxial cable).–The splitter has no individual power supply: it feeds the power through from the NT to the RT.–Respect the installation orientation of the repeaters and splitters, paying attention to the referencemarks on the casing.–The length of the cable used must be noted. In order to facilitate this measurement, refer to themarkings printed every meter, on the outer sheath of the cables. To know the length of cable ins-talled, subtract the number at one end from the number at the other end of the cable used.3.9.1 Installation directions for an assembly with 2 NT units–The system supports a maximum of 2 repeaters and 1 passive splitter per route. Route meansthe path between an NT unit and the RT unit.–The variable distance between an RT and a repeater is from 0 to 70 meters.–The fixed distance between two repeaters is 70 meters.–The fixed distance between a repeater and an NT is 70 meters.–The fixed distance between two repeaters encompassing a passive splitter is 50 meters.–The fixed distance between a repeater and an NT, and encompassing a splitter, is 50 meters.–If a fixed length section must be coiled, respect a minimum bending radius of 200 mm.Figure 34 – Passive splitter15454,5435,5
3CC12423AAAA TQ BJA 01 Issue 01 - March 2001 - Draft 03 49/ 11452Figure 35 – RepeaterExample of assemblyThis example is well suited to the distribution of NTs on the same floor of a building.Figure 36 – 2 NT unit assembly124RT 15 to 70 metersNT1NT270 meters50 metersrepeatersplitterrepeater50 meters
50/ 114 Issue 01 - March 2001 - Draft 03 3CC12423AAAA TQ BJA 01523.9.2 Installation directions for an assembly with 4 NT or 8 NT units (*)–The active splitter comprises 2 repeaters and 7 passive splitters, see Figure 37 – 8 NT assemblywith active splitter* and Figure 38 – "4 NT" assembly with active splitter.–This set of components is located in a casing (if necessary, the active splitter may be assembledon-site via field cabling by the installer).–The cables between the passive splitter and the other components must then be less than 30 cm.long.–The variable distance between a RT and an active splitter is from 20 to 50 m for a standard cableor from 70 to 140 m for a low-loss cable.–The fixed distance between an active splitter and an NT is 24 m for a standard cable.–The fixed distance around a repeater from an active splitter to an NT is 94 m for a standard cable.–For each access not used by an NT, add a 75 Ohm load.Example of assembly with active splitter:Note: The active splitter unit is locked by two special bolts. Use the tool splitter 8V Torx T15 to unlockit.Figure 37 – 8 NT assembly with active splitter*Special boltsInside viewOutside viewThe dimensions are in millimeters300280Use the included fixing kit362386Height : 96 mm

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